Stroke-adjusting mechanism



Nov. 4 1924. 1,514,454

. H. S. FULLERTON STROKE ADJUSTING MECHANI SM Filed Jan. 13. 1921 Patented Nov. 4, 3924.

Unit it arse TENT i.

HERBERT S. FULLERTON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NILES- IBEMENT-POND COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

STROKE-ADJUSTING MECHANISM.

Application filed January 13, 1921.

To all whom it may concern:

Be it known that I, HERBERT S. FULLER- TON, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Stroke-Adjusting Mechanism, of which the following is a specification.

This invention relates to metal working machines of the reciprocating tool and work type such as planers, shapers, slotters and the like and the primary object of the invention is to provide an improved stroke adjusting mechanism particularly applicable to such machines, such mechanism being operablefrom a position exterior of the machine and convenient to the operator. In connection with the stroke adjusting mechanism, it is an object of the invention to provide improved means for securely clamping the said mechanism in its adjusted position, such means also being operable exteriorly of the machine. A further object of the invention is to provide other mechanism for accurately indicating the amount of adjustment given to the stroke. I

' With the above objects in View, the invention will now be described with reference to the drawing wherein:

Figure 1 is a transverse vertical section through a planer illustrating the present invention applied thereto.

Fig. 2 is a partial plan view thereof. 1

Fig. 3 is a face view of the stroke adjusting means taken on the line 33 of Fig. 1.

Fig. 4 is a face View of the stroke indiizrating means taken on the line 4- 1 of i Fig. 5 is an enlarged sectional view of the stroke adjusting and clamping means taken on the line 5-5 of Fig. 1.

Fig. 6 is a fragmentary side elevation of a shaper having my invention applied thereto. The improved mechanism comprising the present invention is particularly applicable to machines of the reciprocating type such as planers, shapers, slotters and the like. However, while the invention .as generally illustrated in the drawing is shown in connection with a planer having a reciprocating table, it should be understood that the improvements comprising the invention are Serial No. 436,964..

- not limited particularly to a planer but are 2. This table is adapted to be reciprocated.

by means of an oscillating link 3 driven by any suitable power means through a gear 4. The gear 4 is keyed to a rotary driving drum 5. The inner face of the drum 5 is provided with a radial guideway 6 in which is mounted a slide 7 adjustable by means of a screw 8. A pin 9 carrying a block or driver 10 freely slidable within a longitudinal guideway 11 in the link 3 is provided on the. slide at one end thereof. The link 3 comprises two telescopic sections 3 and 3", the section 3? being pivoted at its lower end to the bed at 12 and the section 3 being pivoted at its upper end at 13 to a block 14 adjustably secured to the table. The screw 8 is journaled at one end in a bearing 15 and a bevel gear 16 thereon adjacent the bearing meshes v with a bevel gear 17 on a tubular shaft 18 mounted in bearings 19 within the drum.

At its outer end, this shaft has non-rotatably mounted thereon a second sleeve 20 on which is keyed an adjusting hand wheel 21. Rotation of the hand wheel is adapted to rotate the screw to adjust the driver toward and from the center of the drum thereby varying the throw of the link 3 and the reciprocation of the table. An indexing dial 22 is provided for indicating the amount of rotative movement given to the hand wheel 21 and the position of the block 10. In adjusting the block 10 from zero to maximum the shaft 18 must be given several rotations. In order to properly record these rotations, the indexing dial 22 is adapted to be rotated from the shaft 18 at a greatly reduced speed through the following mechanism. An in.- ternal gear 23 is secured to the drum 5 and an external gear-24 is rotatably mounted eccentrically of the shaft 18 on an eccentric portion 20 of the sleeve 20 and connected to the dial 22 by means of one or more pins or- The gears 23 and 24 are always in mesh and as the sleeve 20 is rotated, the meshing osition of these gears travels around the s aft 18 with the eccentric ortion 20 struction comprises t e subject matter of a copending application Serial No. 436,968 to L. M. Pyle, filed January 13, 1921. It will be seen that for each such rotation, the dial 22 is rotated relative to the gear 23 a distance equal to the difference of the number having inclined sides 28 and 28 engaging complemental surfaces within the bifurcated parts of the slide is adapted to be forced inwardly of the slide to wedge the legs 7 a and 7 thereof into tight clamping engagement with the drum. As illustrated, the block 28 entirely surrounds the screw 8, although as will be understood, such construction is not essential to a realization of the invention. The means for forcing the block into clamping engagement comprises a shaft 29 preferably integral with the block and extending through the tubular shaft 18. A nut 30 is threaded to the end of shaft 29 and has bearing against the sleeve 20 which at its inner end bears directly against the drum. After adjustment of the slide 7 by means of the hand wheel 21, the former'may be tightly clamped in adjusted position by tightening the nut 30. It will be noted that the means for operating the mechanism just described is exterior of the machine remote from the parts themselves and is readily accessible, it only being necessary for the operator to swing open the pivoted cover member 31.

In Fig. 6 Ihave shown my invention as applied to a shaper. In such view the section 3' of the link 3 is pivoted at 13 to an adjustable block 32 on the reciprocatory ram or tool slide 33 of a shaper, a tool 34 being mounted in the ram for operation on work carried by a work support 35. The operation of the mechanism as heretofore described in connection with a planer, as shown in Figs. 1 to 5, applies in like manner to the mechanism when used on a shaper as illustrated in Fig. 6.

What I claim is:

1. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support comprising a rotary member, a driver adjustably mounted therein, a screw for'adjusting the driver toward and from the center of the rotary member, and means This consurrounding the screw for securing the driver in adjusted position.

2. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support comprising a rotary member, a slide adjustably mounted therein, a driver on the slide, a screw for adjusting the slide to move the driver toward and from the center of the rotary member, and means adjacent the screw for wedging the slide into tight clamping engagement with the rotary member.

3. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support comprising a rotary member, a slide adjustably mounted therein, a driver on the slide, a screw for adjusting the slide to move the driver toward and from the centor of the rotary member, means adjacent the screw for wedging the slide into tight clan1ping engagement with the rotary member, a shaft operatively connected with the screw for rotating the same, and means coaxial of the shaft for operating the wedge means.

4. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocatin'g one support comprising a rotary member, a slide formed with a longitudinal opening therein adjustably mounted in the'member, a driver on the slide, a wedge block in the slide opening, means for forcing the block into the opening to wedge the slide into clamping engagement with the rotary memher, and means coaxial of the block forcing means and rotatable relative thereto for ad justing the slide to move the driver toward and from the center of the rotary member.

5. In combination with a metal Working machine comprising a bed, a work support and a tool support, means for reciprocating one support comprising a rotary member, a slide formed with a longitudinal opening therein adjustably mounted in the member, a driver on the slide, a screw for adjusting the slide to move the driver toward and from the center ofthe rotary member, a wedge block in the slide opening, means for forcing the block into the opening to spread the slide into clamping engagement with the rotary member, and means coaxial of the block forcing means for rotating the screw.

6. In combination with a 'metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support comprising a rotary member, a slide having one end bifurcated adjustably mounted in the member, a driver on the slide, a wedge block mounted between the furcations of the slide, means for forcing the block between the furcatio'ns to wedge the latter into clampin engagement with the rotary member, an means extending parmounted in the member, a driver on the slide,

a screw for adjusting the slide to move the driver toward and from the center of the rotary member, a wedge block mounted between the furcations of the slide, means extending longitudinally of the rotary member for forcing the block between the furcations to wedge the latter into clamping engagement with the rotary member, and means extending parallel with the block forcing means for rotating the screw.

8. In a stroke adjusting mechanism for metal working machines, the combination of a rotary adjusting shaft, an internal sta tionary gear mounted concentrically of the shaft, an external gear mounted eccentrically on the shaft and adapted to be moved eccentrically thereabout as the shaft is rotated, said gears having a different number of teeth respectively and being always in mesh, the point of mesh traveling around the shaft as the same rotates, and a dial secured to the external gear and adapted to slowly rotate relative to the internal gear as the shaft is rotated.

9. In a stroke adjusting mechanism for eccentrically thereabout as the shaft is ro-- tated, the internal gear having a greater number of teeth than the external gear and the gears being always in mesh, the point of mesh traveling around the shaft as the same rotates, and a dial secured to the external gear and adapted to slowly rotate relative to the internal gear as the shaft is rotated.

10. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support comprising a rotary member, a slide adjust'ably mounted in the member, a driver on the slide, a slide clamping block adjacent the slide, a shaft for operating the block, a tubular shaft coaxial of the shaft for adjusting the slide, a sleeve mounted on the tubular shaft, an internal stationary gear mounted concentrically of the shaft, an external gear mounted eccentrically on the sleeve, the gears having a difierent number of teeth respectively and being always in mesh, the point of mesh traveling around the shaft as the same rotates, and a dial secured to the external gear and adapted to slowly rotate relative to the internal gear as the shaft is rotated.

11. In combination with a metal working machine comprising a bed, a work support.

and a tool support, means for reciprocating one support, means comprising a shaft for varying the stroke of the reciprocating member, and an indexing dial rotative synchronously with the shaft but at a relatively reduced speed, the dial being adapted to indicate the stroke adjustment.

12.- In combination with a metal working machinecomprisinga bed, a work support and a tool support, means for reciprocating one support, means comprising a shaft for varying the stroke of the reciprocating member, and an indexing dial surrounding the shaft and opcratively connected thereto to rotate synchronously therewith at a relatively reduced speed, the dial being adapted to indicate the stroke of adjustment 13. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support, means comprising a shaft for varying the stroke of the reciprocating member, an indexing dial surrounding the shaft, an internal gear surrounding the shaft, an external gear mounted on an eccentric rotatable with the shaft, two gears having different numbers of teeth and meshing adjacent the greatest diameter of the eccentric, and means connecting the dial with one of the gears. V

14. In combination with a metal working machine comprising a bed, a work support and atool support, means for reciprocating one support, means comprising a shaft for varying the stroke of the reciprocating member, an indexing dial surrounding the shaft, an internal stationary gear surrounding the shaft, an external gear mounted on an eccentric rotatable with the shaft, the two gears having different numbers of teeth and meshing adjacent the greatest diameter of the eccentric, and means connecting the dial with the external gear.

15. In combination with a metal working machine comprising a bed, a work support and a tool support, means for reciprocating one support, means comprising a shaft for varying the stroke of the recipro eating member, a sleeve mounted on and secured to the shaft, an indexing dial loose on the sleeve, an internal gear surrounding the sleeve, an external gear mounted on an eccentric portion of the sleeve, the two gears having different numbers of teeth and meshing adjacent the greatest diameter of the eccentric, ,and means connecting the dial with one of the gears.

In testimony whereof, I hereto afix my signature.

ERBERT S. FRTON. 

